Results 21 to 30 of about 13,565 (218)
Experimental and Theoretical Investigation of Propane/Butane and Propane/Isobutane Mixtures as an Alternative to R134a in a Domestic Refrigerator [PDF]
Engineering and Technology Journal, 2014 In the present work, theoretical and experimental investigation have been carried out with two hydrocarbon refrigerant mixtures as a possible alternatives to R134a. Theoretical performance of an ideal vapor compression refrigeration cycle using R290/R600
Wahid S. Mohammad, Assad Oda Jassim
doaj +1 more source
Advances in Mechanical Engineering, 2016 In this article, R1234ze(E), R152a, and three mixtures M1, M2, and M3 composed of R152a and R1234ze(E) (in the ratio of 60:40, 50:50, and 40:60, by mass, respectively) as drop-in replacements of R134a in vapor compression system were theoretically ...
Zhaofeng Meng +3 more
doaj +1 more source
Ain Shams Engineering Journal, 2018 Due to the European Communities motor vehicle directive (2006) refrigerants with a GWP higher than 150 are not allowed from January 1, 2017 in new passenger cars. Thus, a replacement for R134a is needed.
Gaurav, Raj Kumar
doaj +1 more source
Investigation of Working Fluid Performance through a Centrifugal Compression System
Applied Mechanics, 2022 Commonly, researchers have investigated many factors that impact the performance of air conditioning and refrigeration systems, such as varied cooling configurations, operating conditions and optimization of specific system components.
James Bull +2 more
doaj +1 more source
European Mechanical ScienceThe increasing environmental disasters in recent years are caused by the release of artificial substances into the environment. The majority of artificial-containing emissions originate from petrochemical products.
Alpaslan Alkan
doaj +1 more source
Journal of Engineering, 2019 Reducing global warming potential (GWP) of refrigerants is needed to the decrease of ozone-depleting of refrigeration systems leakages. Refrigerant R1234yf is now used to substitute R134a inside mobile air conditioning systems.
Rafah Hussain, Issam Mohammed ali
doaj +1 more source
Energy Reports, 2020 Vapour compression refrigerator systems working with R134a are associated with high energy demand and environmental problems and refrigerator consumers’ prioritise energy consumption in choosing their choice of refrigerator systems.
T.O Babarinde, S.A Akinlabi, D.M Madyira
doaj +1 more source
R134a flow patterns in small-diameter tubes
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2005 R134a vapour-liquid two-phase flow patterns were studied in vertical small-diameter tubes. The observed flow patterns include bubbly, dispersed bubble, slug, churn, annular, and mist flow. Six integrated flow pattern maps, derived for two internal diameters (2.01 and 4.26 mm) and three different pressures (6.0, 10.0, 14.0 bar), are presented.
Chen, L, Tian, YS, Karayiannis, TG
openaire +2 more sources
Naše More (Dubrovnik), 2018 Halocarbon refrigerants have been scheduled for total phase out because they contributed significantly to the two major global environmental problems - ozone layer depletion and global warming.In this study, the performances of the environmentally ...
F. O. Borokinni +2 more
doaj +1 more source
Simulation study on performance of a dual-source hybrid heat pump unit with alternative refrigerants
Energy and Built Environment, 2020 To solve the problems of single heat source heat pump systems in severe cold regions, a dual-source hybrid heat pump unit (DSHHPU) is proposed. The mathematical models of the DSHHPU when charging R134a or its alternative refrigerants R32, R290 and R600a ...
Chenguang Bai +5 more
doaj +1 more source